FreeGIS products

Tutorial
FreeGIS Tutorial 1.0 by
Heiko Kehlenbrink (202 pages, b/w, german):
This version dates April 2002. Old stock may be available from GDF Hannover Media (see below).

Manual
GRASS-Handbuch 1.1 by Markus Neteler
(266 pages, b/w, german):
This version dates May 2003. Old stock may be available from GDF Hannover Media (see below). Also, GDF Hannover Media offers various updates and additional literature around GRASS.

There may be old stock of german FreeGIS Tutorial and GRASS Handbuch available
from at GDF Hannover Media.
Apart from that, there you will find comprehensive additional and up-to-date
literature about GRASS!